Inflatable mattress

ABSTRACT

An inflatable mattress has a body and multiple chamber walls. The body has a top, a bottom, an annular sidewall, a primary chamber defined in the body and a partitioning member mounted in the primary chamber between the top and bottom surfaces. The chamber walls are arranged in a row, are mounted in the primary chamber adjacent to the top of the body above the partitioning member. Adjacent bags separate from each other at an interval. Each chamber wall has a sub chamber. The separate chamber walls individually and respectively support persons lying on the inflatable mattress so that each person&#39;s movement only deforms a corresponding chamber wall instead of deforming other chamber walls on which other persons lie. Therefore, the persons on the inflatable mattress would not interfere with each other.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a mattress, and more particularly to an inflatable mattress that uniformly supports persons lying on the inflatable mattress and keep each person's movement without interfering with others.

2. Description of Related Art

Inflatable mattresses are used generally in travels and camping.

With reference to FIG. 1, a conventional inflatable mattress has a body (90) being resilient and made of plastic and a single air chamber defined in the body (90).

Because persons' movements on the conventional inflatable mattress such as turning the body or getting in or out of the conventional inflatable mattress change the air pressure in the air chamber and cause the deformation of the body (90), the persons lying on the conventional inflatable mattress would easily interfere with each other.

A conventional inflatable mattress with multi-chamber is disclosed in U.S. Pat. No. 6,463,610. The inflatable mattress has a body, a first chamber and a second chamber. The body is hollow and has a top surface and a bottom surface. The first and second chambers are defined in the body from the top surface to the bottom surface and are separated hermetically from each other by an internal barrier attached vertically to the top surface and the bottom surface. Although the vertically internal barrier divides air in the body into two parts restrictedly flowing respectively in the chambers, the vertically internal barrier is unable to limit the air inside each chamber in an upper area adjacent to the top surface to further reduce the deformation of each chamber as persons lying on the inflatable mattress.

To overcome the shortcomings, the present invention provides an inflatable mattress to mitigate or obviate the aforementioned problems.

SUMMARY OF THE INVENTION

The main objective of the invention is to provide an inflatable mattress that uniformly supports persons lying on the inflatable mattress and keep each person's movement without interfering with others.

An inflatable mattress in accordance with the present invention comprises a body and multiple chamber walls. The body has a top, a bottom, an annular sidewall, a primary chamber defined in the body and a partitioning member mounted in the primary chamber between the top and bottom surfaces. The chamber walls are arranged in a row, are mounted in the primary chamber adjacent to the top of the body and above the partitioning member. Adjacent chamber walls separate from each other at an interval. Each chamber wall defines a sub chamber.

Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a conventional inflatable mattress in accordance with the prior art;

FIG. 2A is a perspective view of a first embodiment of an inflatable mattress in accordance with the present invention;

FIG. 2B is a cross sectional perspective view of the inflatable mattress in FIG. 2A;

FIG. 2C is an enlarged top view of the inflatable mattress in FIG. 2A;

FIG. 2D is a cross sectional front view of the inflatable mattress in FIG. 2A;

FIG. 3A is a perspective view of a second embodiment of the inflatable mattress in accordance with the present invention;

FIG. 3B is a cross sectional perspective view of the inflatable mattress in FIG. 3A;

FIG. 3C is an enlarged top view of the inflatable mattress in FIG. 3A; and

FIG. 3D is a cross sectional front view of the inflatable mattress in FIG. 3A.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

With reference to FIGS. 2A-2D, a first embodiment of an inflatable mattress in accordance with the present invention comprises a body (10), multiple chamber walls (20), an air pump assembly and a cable box (5).

The body (10) may be rectangular, is made of resilient material and has a top, a bottom, an annular sidewall, a pad (15), a primary chamber (1), a partitioning member (111), multiple upper holding straps (7) and multiple lower holding straps (3).

The primary chamber (1) is defined in the body (10).

The partitioning member (111) may be rectangular, may be a sheet, is mounted in the primary chamber (1), is mounted on the annular sidewall between the top and the bottom, holds the annular sidewall in a predetermined shape such as a rectangular shape and divides the primary chamber (1) into an upper chamber (11) and a lower chamber (12). The upper chamber (11) has an inner top surface and an inner bottom surface. The lower chamber (12) is located under the upper chamber (11) and has an inner top surface and an inner bottom surface. The partitioning member (111) has a top surface, a bottom surface and multiple through holes (112) defined through the partitioning member (111) and communicating with the upper and lower chambers (11, 12).

The pad (15) is annular, is attached to the bottom of the body (10) and has an internal chamber (13) defined in the pad (15).

The upper holding straps (7) are mounted between the top of the body (10) and the top surface of the partitioning member (111), are located between the inner top and bottom surfaces of the upper chamber (11) and hold the upper chamber (11) in a predetermined shape such as a rectangular shape so that the upper chamber (11) would not deform to be ball-like.

The lower holding straps (3) are mounted between the bottom surface of the partitioning member (111) and the bottom of the body (10), are located between the inner top and bottom surfaces of the lower chamber (12) and hold the lower chamber (12) in a predetermined shape such as a rectangular shape so that the lower chamber (12) would not deform to be ball-like. The partitioning member (111), upper holding straps (7) and lower holding straps (3) cooperate to keep the body (10) in a predetermined shape such as a rectangular shape from deforming to be ball-like.

The chamber walls (20) are made of resilient materials are arranged in a row, are mounted in the primary chamber (1) adjacent to the top of the body (10), are mounted between the top of the body (10) and the top surface of the partitioning member (111) and may be located between the inner top and bottom surfaces of the upper chamber (11). Adjacent chamber walls (20) separate hermetically from each other at an interval. Each chamber wall (20) has an inner top surface, an inner bottom surface and a sub chamber (2). The inner top surface of the chamber wall (20) is a part of the top of the body (10). The inner bottom surface of the chamber wall (20) is a part of the partitioning member (111). The sub chamber (2) is defined in the chamber wall (20).

The air pump assembly is mounted on the body (10) and has an air pump (4), a primary inlet-and-outlet pipe (41) and multiple auxiliary inlet-and-outlet pipes (42, 43).

The air pump (4) is mounted through the annular sidewall of the body (10) and selectively inflates or deflates at least one of the primary chamber (1) in the body (10) and the sub chambers (2) in the chamber walls (20).

The primary inlet-and-outlet pipe (41) is mounted on the air pump (4), connects to the primary chamber (1), may extend in the primary chamber (1), may extend in the upper chamber (11) and allows the air pump to inflate or deflate the primary chamber (1) through the primary inlet-and-outlet pipe (41).

The auxiliary inlet-and-outlet pipes (42, 43) are mounted on the air pump (4), connect respectively to the sub chambers (2), may extend respectively in the sub chambers (2) and allow the air pump to inflate or deflate at least one of the sub chambers (2) through the auxiliary inlet-and-outlet pipes (42, 43).

The cable box (5) is hollow, is mounted on the body (10) and may receive a power cable of the air pump assembly.

When persons lie on the inflatable mattress inflated, the chamber walls (20) respectively and individually support the persons. One person's movement such as turning the body or getting in/out of the inflatable mattress would only deforming a corresponding one of the chamber walls (20) without deforming adjacent separate chamber walls (20) on which other persons lie. Therefore, the persons on the inflatable mattress would not interfere with each other.

With reference to FIGS. 3A-3D, a second embodiment of the inflatable mattress in accordance with the present invention is similar to the first embodiment however has the partitioning member (111 a) being hollow and having an interior chamber (113). The interior chamber (113) is flat and is defined in the partitioning member (111 a).

The separate chamber walls (20) individually and respectively support persons lying on the inflatable mattress so that each person's movement only deforms a corresponding chamber wall (20) instead of deforming other chamber walls (20) on which other persons lie. Furthermore, the partitioning member (111, 111 a) between the top and the bottom of the body (10) holds the chamber walls (20) adjacent to the top of the body (10) in the upper chamber (11) so the deformation of the chamber walls (20) is more limited and smaller when compared with that of the chambers in the conventional inflatable mattress disclosed in U.S. Pat. No. 6,463,610. Therefore, the persons on the inflatable mattress would not interfere with each other.

Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 

1. An inflatable mattress comprising: a body having a top, a bottom, an annular sidewall and further having a primary chamber defined in the body; and a partitioning member mounted in the primary chamber, mounted on the annular sidewall between the top and the bottom of the body, holding the annular sidewall, dividing the primary chamber into an upper chamber and a lower chamber and having a top surface and a bottom surface; and multiple chamber walls arranged in a row, being separated, mounted in the primary chamber adjacent to the top of the body and mounted between the top of the body and the top surface of the partitioning member, and each chamber wall having a sub chamber.
 2. The inflatable mattress as claimed in claim 1 further comprising an air pump assembly mounted on the body and having an air pump mounted through the sidewall of the body and selectively inflating or deflating at least one of the primary chamber and the sub chambers; a primary inlet-and-outlet pipe mounted on the air pump and connecting to the primary chamber; and multiple auxiliary inlet-and-outlet pipes mounted on the air pump and connecting respectively to the sub chambers.
 3. The inflatable mattress as claimed in claim 2, wherein: the upper chamber has an inner top surface and an inner bottom surface; the lower chamber has an inner top surface and an inner bottom surface; and the body further has multiple upper holding straps mounted between the top of the body and the top surface of the partitioning member, located between the inner top and bottom surfaces of the upper chamber and holding the upper chamber.
 4. The inflatable mattress as claimed in claim 3, wherein the body further has multiple lower holding straps mounted between the bottom surface of the partitioning member and the bottom of the body, located between the inner top and bottom surfaces of the lower chamber and holding the lower chamber.
 5. The inflatable mattress as claimed in claim 4, wherein each chamber wall has an inner top surface being a part of the top of the body; and an inner bottom surface being a part of the partitioning member.
 6. The inflatable mattress as claimed in claim 5, wherein the body further has a pad being annular, attached to the bottom of the body and having an internal chamber defined in the pad.
 8. The inflatable mattress as claimed in claim 6, wherein the partitioning member is hollow and has an interior chamber being flat and defined in the partitioning member.
 9. The inflatable mattress as claimed in claim 2, wherein: the primary inlet-and-outlet pipe extends in the primary chamber the auxiliary inlet-and-outlet pipes extend respectively in the sub chambers.
 10. An inflatable mattress comprising: a body having a top, a bottom, an annular sidewall and further having a primary chamber defined in the body; and a partitioning member mounted in the primary chamber, mounted on the annular sidewall between the top and the bottom of the body, holding the annular sidewall, dividing the primary chamber into an upper chamber and a lower chamber and having a top surface and a bottom surface; and multiple chamber walls arranged in a row, mounted in the primary chamber adjacent to the top of the body and mounted between the top of the body and the top surface of the partitioning member, adjacent chamber walls separating from each other at an interval, and each chamber wall having a sub chamber. 